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Design Exchange Format
{{about, the specification for representing a circuit, the CAD data file format, AutoCAD DXF Design Exchange Format (DEF) is an open specification for representing physical layout of an integrated circuit in an ASCII format. It represents the netlist and circuit layout. DEF is used in conjunction with Library Exchange Format (LEF) to represent complete physical layout of an integrated circuit while it is being designed. DEF was developed by Cadence Design Systems Cadence Design Systems, Inc. (stylized as cādence)Investor's Business DailCEO Lip-Bu Tan Molds Troubled Cadence Into Long-Term LeaderRetrieved November 12, 2020 is an American multinational corporation, multinational technology and computational .... DEF files are usually generated by place and route (P&R) tools and are used as an input for post analysis tools, such as extraction tools or power analysis tools. External linksLEF/DEF 5.5 Language Reference, Product Version 5.5, Internet Archive LEF/DEF 5.6 Langu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Physical Layout
In integrated circuit design, integrated circuit (IC) layout, also known IC mask layout or mask design, is the representation of an integrated circuit in terms of planar geometric shapes which correspond to the patterns of metal, oxide, or semiconductor layers that make up the components of the integrated circuit. Originally the overall process was called tapeout, as historically early ICs used graphical black crepe tape on mylar media for photo imaging (erroneously believed to reference magnetic data—the photo process greatly predated magnetic media). When using a standard process—where the interaction of the many chemical, thermal, and photographic variables is known and carefully controlled—the behaviour of the final integrated circuit depends largely on the positions and interconnections of the geometric shapes. Using a computer-aided layout tool, the layout engineer—or layout technician—places and connects all of the components that make up the chip such that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Integrated Circuit
An integrated circuit (IC), also known as a microchip or simply chip, is a set of electronic circuits, consisting of various electronic components (such as transistors, resistors, and capacitors) and their interconnections. These components are etched onto a small, flat piece ("chip") of semiconductor material, usually silicon. Integrated circuits are used in a wide range of electronic devices, including computers, smartphones, and televisions, to perform various functions such as processing and storing information. They have greatly impacted the field of electronics by enabling device miniaturization and enhanced functionality. Integrated circuits are orders of magnitude smaller, faster, and less expensive than those constructed of discrete components, allowing a large transistor count. The IC's mass production capability, reliability, and building-block approach to integrated circuit design have ensured the rapid adoption of standardized ICs in place of designs using discre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASCII
ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control characters a total of 128 code points. The set of available punctuation had significant impact on the syntax of computer languages and text markup. ASCII hugely influenced the design of character sets used by modern computers; for example, the first 128 code points of Unicode are the same as ASCII. ASCII encodes each code-point as a value from 0 to 127 storable as a seven-bit integer. Ninety-five code-points are printable, including digits ''0'' to ''9'', lowercase letters ''a'' to ''z'', uppercase letters ''A'' to ''Z'', and commonly used punctuation symbols. For example, the letter is represented as 105 (decimal). Also, ASCII specifies 33 non-printing control codes which originated with ; most of which are now obsolete. The control cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Library Exchange Format
In integrated circuit design, Library Exchange Format (LEF) is a specification for representing the physical layout of an integrated circuit in an ASCII format. It includes design rules and abstract information about the standard cells. LEF only has the basic information required at that level to serve the purpose of the concerned CAD tool. It helps in saving valuable resources by providing only an abstract view and thus consuming less memory overhead. LEF is used in conjunction with Design Exchange Format (DEF) to represent the complete physical layout of an integrated circuit while it is being designed. LEF originated by Tangent for their Place and Route (P&R) tools, which were bought by Cadence Design Systems Cadence Design Systems, Inc. (stylized as cādence)Investor's Business DailCEO Lip-Bu Tan Molds Troubled Cadence Into Long-Term LeaderRetrieved November 12, 2020 is an American multinational corporation, multinational technology and computational ....Smith, Michae ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cadence Design Systems
Cadence Design Systems, Inc. (stylized as cādence)Investor's Business DailCEO Lip-Bu Tan Molds Troubled Cadence Into Long-Term LeaderRetrieved November 12, 2020 is an American multinational corporation, multinational technology and computational software company. Headquartered in San Jose, California, Cadence was formed in 1988 through the merger of SDA Systems and ECAD, Inc., ECAD. Initially specialized in Electronic design automation, electronic design automation (EDA) software for the semiconductor industry, currently the company makes software and Electronic hardware, hardware for designing products such as integrated circuits, System on chip, systems on chips (SoCs), printed circuit boards,The StreeHow Cadence Designs the FutureRetrieved July 21, 2020 and pharmaceutical drugs, also licensing intellectual property for the electronics, aerospace, defense and automotive industries, among others. History 1983–1999 Founded in 1983 in San Jose, California, Cadence Design Systems ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
